Lambda is one of the serverless services provided by AWS. It basically executes any language code, and this code is executed in response to certain events triggered. All we need to do is supply code in one of the languages which AWS Lambda supports like JavaScript, Python, Java, Node.js, C# and many more. Online code editor available in lambda console can also be used.
Lambda automatically runs the code, without requiring us to provision and manage the servers. Thus, Lambda is a serverless computing service which runs the code whenever event gets triggered. Lambda itself manages the underlying compute resources, user does not require any server to run this code and manage it.
A set of code uploaded on lambda is executed in response to an event, it scales the load automatically ranging from few requests to thousands requests per day, scaling is done based upon number of requests. Developers need to focus on simply writing the code and deployment task will be handled by Lambda.
Benefits
No worries about the servers:
No servers are required, Lambda eliminates the need to establish and maintain traditional server setup thus, decreasing complexity. All that is required is simple code which will be uploaded on lambda. So, Lambda simply expects code from us and rest all is operated and managed by lambda itself.
Automatic Scaling:
Scaling of the underlying compute resources is done automatically based on the size of workload. Lambda runs the code parallely in response to each and every trigger it receives and processes each trigger individually precisely scales with number of requests being received.
Fault Tolerant:
Lambda eliminates the need to size deployment’s capacity for peak traffic. Developer simply need to build the code needed to handle a single request, lambda will itself create the required instances so as to serve the incoming requests parallely making sure to eliminate the points of failure like infrastructure failure etc.
Cost Effective:
Billing in lambda is based on usage, it is metered on seconds, we only pay for the amount of time that our code is running and number of requests served. Cost of setting up servers gets eliminated totally. You are charged for every 100ms your code executes and the number of times the code is triggered.
Use Cases:
There are huge number of use cases for AWS lambda, there are numerous ways in which AWS Lambda can be used specifically in the businesses.
Image Processing:
When an image is uploaded in a S3 bucket in a raw format, AWS Lambda gets triggered. As a result images are processed and converted into thumbnails based on various devices which will be accessing the image
Real-Time Data Backup:
Near real time manual backups are almost impossible. If we even come out with a manual way to do near real time data backup then, it would not be that efficient looking at the amount of data that will be put-in. Here, AWS Lambda manually handles the backup
Consulting practices / Solutions
To provide serverless application and website:
Serverless architecture completely reduces the complexity related to building web and mobile applications. It greatly benefits those applications which are not always loaded thus, paying for just the compute used by Lambda
Deploying Lambda functions to trigger other AWS services like API Gateway, S3 bucket:
For fetching image which isn’t available in the Amazon S3 bucket the browser follows the redirect and request the image resize through AWS API Gateway thus, triggering Lambda function which fetches the original image from the S3 bucket, resizes it and uploads it back along with the corresponding requested key.
Architecture
APN partner experience and expertise description
Bigstep Technologies as an APN partner has more than 10 years of experience and expertise in various domains from developing code to providing best hosting solutions to the clients all over the world. BigStep is continuously proving its stake in the market in providing best support to the customers around the globe and achieving customer success and satisfaction.
Our experienced Software Engineers and DevOps AWS certified Engineers helping our clients to develop apps, website and deploying secure infrastructure by employing AWS standard practices to deliver the best performance with cost effective environment.
